Chongqing used to be a mountain city with a small plain, and many houses were built on the mountain. Therefore, in order to save limited land information and facilitate people's travel, many overpasses have appeared in Chongqing.
The reason why Chongqing overpass is built is mainly to solve the problem of urban traffic congestion. With the acceleration of urbanization, the traffic pressure is increasing. In order to facilitate citizens' travel, the government decided to build overpasses in important transportation hubs to separate pedestrians from vehicles, ease traffic congestion, improve traffic efficiency and improve citizens' travel safety. In addition, the construction of overpass can beautify the urban environment, enhance the image of the city and promote the construction of urban civilization.